package com.atguigu.utils;


import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.pool.DruidDataSourceFactory;

import java.io.InputStream;
import java.sql.Connection;
import java.util.Properties;

public class JdbcUtils {
    private static DruidDataSource dataSource;
    static {
        try {
            Properties properties=new Properties();
            //读取配置文件
            InputStream inputStream = JdbcUtils.class.getClassLoader().getResourceAsStream("jdbc.properties");
            //从流中加载数据
            properties.load(inputStream);
            //创建数据库连接池
           dataSource= (DruidDataSource) DruidDataSourceFactory.createDataSource(properties);
            //测试，有值就是连接成功
           // System.out.println(dataSource.getConnection());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }



    public static Connection getConnection(){

        Connection conn = null;

        try {
            conn = dataSource.getConnection();

        } catch (Exception e) {
            e.printStackTrace();
        }
        return conn;
    }



    public static void close(Connection conn){
        if(conn!=null){
            try {
                conn.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

    }








}
